air hole

An air hole is a hole that lets in air or lets out air. Duh. Really? I would never have guessed.

You know what the word air means. You know what the word hole means. Is there anything important and relevant about the term air hole that you can’t guess from your knowledge of those two words? I don’t think so.

Related Posts:

alive Alive is probably one of the most misused words in the English language. If not the most misused, then it's certainly in the top 100. Most people—close to 100%—think that alive means to be living and/or to be vibrant. Nothing…

alluvium An alluvium is a very tiny, extinct volcano. When an alluvium is created, a tiny hole opens up in the ground and a small amount of magma spurts up and solidifies quickly, sealing the hole and creating the very small…

anarchy An anarchy (noun) is the rarest animal you’ll never see. And, no, “never see” is not a typo. You honestly will almost certainly never see an anarchy. The reason is simple. There are no anarchies alive today. There never have…

amnesty Amnesty is the rarest—and undoubtedly the weirdest—grain on the planet. (When we say “planet,” we obviously mean Earth. We have no idea if amnesty exists on any other planet and, if so, how common it is there and whether it…

anchorite Anchorite is, by far, the heaviest element known to science. And “by far” doesn’t begin to do it justice. What’s more, anchorite is so weird that even science is denying its existence out of fear that science might be shunned…